boron nitride ceramics

Boron Nitride Ceramic

Boron nitride has a variety of crystal structures, including the most common hexagonal structure (h-BN), high-hardness cubic structure (c-BN), and the rhombic structure (r-BN) generated during the crystal phase transition process, in addition to wurtzite type boron nitride (w-BN) and two-dimensional boron nitride crystal.

Hexagonal structure boron nitride can be fabricated by hot press sintering or pyrolysis process, with high temperature and corrosion resistance, good insulation and thermal stability, and it is widely used to produce crucible, insulating parts and high temperature and corrosion resistance parts.

Cubic boron nitride is synthesized by hexagonal boron nitride under high temperature condition, with extremely high hardness, second only to diamond, it is commonly used to manufacture machining tools and abrasive tools.

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Boron Nitride Ceramic

BN Ceramic By Types

As our important product, ATCERA can produce various boron nitride crucibles, tubes, plates, machining tools and aabrasive tools, . To ensure product performance, we select high purity and granularity homogenuous powder, apply the most appropriate forming method and sintering process, to form dense and uniform ceramic structure, then advanced machining processes are used to get dimension with high accuracy and good surface finish. If you have any boron nitride product request, or need technical support, please do not hesitate to contact us.

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Technical Data of Boron Nitride Materials

Items	Pyrolytic boron nitride	Hot pressed boron nitride
Purity (%)	99.99%	99.5%
Density (g/cm³)	2.15-2.19	1.96-2
Bending strength (MPa)	173 (A direction)	310
Tensile strength (MPa)	112 (A direction)	110
Compressive strength (MPa)	154 (A direction)	120
Hardness (HV0.5)	651	62
Maximum working temperature (℃)	1000(air), 2300(vacuum)	900(air), 1850(vacuum)
Thermal conductivity (W/m*K)	60 (A direction)	55
Thermal expansion coefficient (/℃)	*610^-7**	*1.810^-6**
Volume resistivity (Ohm*cm)	*210¹⁴**	*1.210¹⁴**
Dielectric strength (kV/mm)	55	76

*This chart illustrates the standard characteristics of the boron nitride materials commonly employed in the manufacturing of our boron nitride products and parts. Please be aware that the attributes of customized BN products and parts may vary depending on the specific processes involved. Detailed parameter is decided by type and composition of stabilizing agent.

Q：What is the thermal conductivity of Boron Nitride Ceramic?

A：Boron Nitride Ceramic has excellent thermal conductivity, typically around 30-60 W/m·K, depending on the grade. This makes it suitable for applications requiring efficient heat dissipation, especially in electronics and high-temperature environments.

Q：Is Boron Nitride Ceramic chemically resistant?

A：Yes, Boron Nitride Ceramic is chemically inert and highly resistant to most acids, alkalis, and solvents. It does not react with molten metals, making it ideal for use in metal processing and chemical industries.

Q：Can Boron Nitride Ceramic withstand high temperatures?

A： Boron Nitride Ceramic can operate at high temperatures up to 900℃ in air and up to 2000℃ in inert or reducing atmospheres. Its stability at high temperatures makes it suitable for refractory applications and components exposed to extreme heat.

Q：What are the electrical insulation properties of Boron Nitride Ceramic?

A：Boron Nitride Ceramic is an excellent electrical insulator with a high dielectric strength and low dielectric constant, even at high temperatures. This makes it ideal for use in high-voltage electrical applications and electronic components.

Q：How does Boron Nitride Ceramic perform in lubricating applications?

A：Hexagonal Boron Nitride Ceramic exhibits low friction and can act as a solid lubricant, especially in high-temperature environments where conventional lubricants would fail. This property is useful in applications like bearings and seals where lubrication is critical.

Properties of BN Ceramics

Boron nitride is a kind of widely used advanced industrial ceramic, to meet the needs of different fields, appropriate boron nitride ceramic type can be selected, to achieve required properties.

1. Hexagonal boron nitride has high temperature resistance, maximum working temperature can be higher than 2000℃.

2. h-BN ceramic has good thermal conductivity, and very good thermal shock resistance.

3. h-BN ceramic has good corrosion resistance, it can contact various acid, alkali and other chemical substance.

4. Cubic boron nitride (c-BN) has high hardness, which can reach to Moh's hardness of 9.7, second only to diamond, so the wear resistance is excellent.

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Main Applications of BN Ceramics

1. Mechanical Engineering Industry

Cubic boron nitride can be used to manufacture machining tools and abrasive tools, for fine machining of hardened steel, hard cast iron, superalloy, carbide, surface spraying materials and other high hardness materials.

2. Metallurgical and Semiconductor Industry

Boron nitride can be used to produce crucibles for semiconductor production processed and metal material melting process.

3. High Temperature Refractory Industry

Boron nitride ceramic be used to produce various component for high temperature environment including insulation tubes and plates, protection tubes, etc.

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According to your application scenario, analyze the needs, choose the appropriate material and processing plan.

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FAQ

Do you supply the materials unlisted on your website?

Although our primary focus is on advanced ceramic materials such as alumina, zirconia, silicon carbide, silicon nitride, aluminum nitride, and quartz ceramics, we are always exploring new materials and technologies. If you have a specific material requirement, please contact us, and we will do our best to fulfill your needs or find suitable partners.

Can you aid in material selection & ceramic product design?

Absolutely. Our technical team possesses profound knowledge of ceramic materials and extensive experience in product design. We are happy to provide you with material selection advice and product design support to ensure optimal performance for your products.

Do you have a minimum order value requirement?

We do not have a fixed minimum order value requirement. We always focus on meeting our customers' needs, and we strive to provide quality service and products regardless of the order size.

What services beyond ceramic products do you offer?

In addition to ceramic products, we also provide a range of additional services, including but not limited to: customized ceramic processing services based on your needs, using blanks or semi-finished blanks produced by yourself; if you are interested in outsourced ceramic packaging and metallization services, please contact us for further discussion. We are always committed to providing you with a one-stop solution to meet your various needs.

Do you offer international shipping services?

Yes, we do. No matter where you are located globally, we can ensure the safe and timely delivery of your order.

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